Tania del Socorro Vergara Gomez1,2, Marc Dubois1,2,3, Pierre Jomin2, Megdouda Benamara3, Djamel Berrahou3, Elodie Georget3, Tryfon Antonakakis3, David Bendahan1, Frank Kober1, Stefan Enoch2, and Redha Abdeddaim2
1Aix Marseille Univ, CNRS, CRMBM, Marseille, France, 2Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France, 3Multiwave Imaging, Marseille, France
1Aix Marseille Univ, CNRS, CRMBM, Marseille, France, 2Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France, 3Multiwave Imaging, Marseille, France
We present metasurface pads for passive RF shimming in abdominal imaging at 3T. They were shown to improve the efficiency of both transmit and receive coils leading to local increase of both the transmit field and SNR.
Figure 1. Experimental setup. The metasurface pads (MS) were placed between the receiver array coils and the phantom, one on top and one bellow.
Figure 2. Flip angle maps and profiles in sagittal and transversal orientation. First row shows the reference (Ref) maps acquired without the metasurface pads (MS). Second row: maps acquired using the pads (gray rectangles). The regions of interest are indicated with white arrows. Bottom row: sagittal and transversal profiles along the dashed lines in the upper row.
